-<?php\r
-\r
-/**\r
- * @file src/Content/OEmbed.php\r
- */\r
-\r
-namespace Friendica\Content;\r
-\r
-use Friendica\Core\Cache;\r
-use Friendica\Core\System;\r
-use Friendica\Core\Config;\r
-use Friendica\Database\DBM;\r
-use Friendica\Util\ParseUrl;\r
-use dba;\r
-use DOMDocument;\r
-use DOMXPath;\r
-use DOMNode;\r
-\r
-require_once 'include/dba.php';\r
-require_once 'mod/proxy.php';\r
-\r
-/**\r
- * Handles all OEmbed content fetching and replacement\r
- *\r
- * OEmbed is a standard used to allow an embedded representation of a URL on\r
- * third party sites\r
- *\r
- * @see https://oembed.com\r
- *\r
- * @author Hypolite Petovan <mrpetovan@gmail.com>\r
- */\r
-class OEmbed\r
-{\r
- public static function replaceCallback($matches)\r
- {\r
- $embedurl = $matches[1];\r
- $j = self::fetchURL($embedurl);\r
- $s = self::formatObject($j);\r
-\r
- return $s;\r
- }\r
-\r
- /**\r
- * @brief Get data from an URL to embed its content.\r
- *\r
- * @param string $embedurl The URL from which the data should be fetched.\r
- * @param bool $no_rich_type If set to true rich type content won't be fetched.\r
- *\r
- * @return bool|object Returns object with embed content or false if no embedable\r
- * content exists\r
- */\r
- public static function fetchURL($embedurl, $no_rich_type = false)\r
- {\r
- $embedurl = trim($embedurl, "'");\r
- $embedurl = trim($embedurl, '"');\r
-\r
- $a = get_app();\r
-\r
- $condition = array('url' => normalise_link($embedurl));\r
- $r = dba::select('oembed', array('content'), $condition, array('limit' => 1));\r
-\r
- if (DBM::is_result($r)) {\r
- $txt = $r["content"];\r
- } else {\r
- $txt = Cache::get($a->videowidth . $embedurl);\r
- }\r
- // These media files should now be caught in bbcode.php\r
- // left here as a fallback in case this is called from another source\r
-\r
- $noexts = array("mp3", "mp4", "ogg", "ogv", "oga", "ogm", "webm");\r
- $ext = pathinfo(strtolower($embedurl), PATHINFO_EXTENSION);\r
-\r
-\r
- if (is_null($txt)) {\r
- $txt = "";\r
-\r
- if (!in_array($ext, $noexts)) {\r
- // try oembed autodiscovery\r
- $redirects = 0;\r
- $html_text = fetch_url($embedurl, false, $redirects, 15, "text/*");\r
- if ($html_text) {\r
- $dom = @DOMDocument::loadHTML($html_text);\r
- if ($dom) {\r
- $xpath = new DOMXPath($dom);\r
- $entries = $xpath->query("//link[@type='application/json+oembed']");\r
- foreach ($entries as $e) {\r
- $href = $e->getAttributeNode("href")->nodeValue;\r
- $txt = fetch_url($href . '&maxwidth=' . $a->videowidth);\r
- break;\r
- }\r
- $entries = $xpath->query("//link[@type='text/json+oembed']");\r
- foreach ($entries as $e) {\r
- $href = $e->getAttributeNode("href")->nodeValue;\r
- $txt = fetch_url($href . '&maxwidth=' . $a->videowidth);\r
- break;\r
- }\r
- }\r
- }\r
- }\r
-\r
- $txt = trim($txt);\r
-\r
- if (!$txt || $txt[0] != "{") {\r
- $txt = '{"type":"error"}';\r
- } else { //save in cache\r
- $j = json_decode($txt);\r
- if ($j->type != "error") {\r
- dba::insert('oembed', array('url' => normalise_link($embedurl),\r
- 'content' => $txt, 'created' => datetime_convert()), true);\r
- }\r
-\r
- Cache::set($a->videowidth . $embedurl, $txt, CACHE_DAY);\r
- }\r
- }\r
-\r
- $j = json_decode($txt);\r
-\r
- if (!is_object($j)) {\r
- return false;\r
- }\r
-\r
- // Always embed the SSL version\r
- if (isset($j->html)) {\r
- $j->html = str_replace(array("http://www.youtube.com/", "http://player.vimeo.com/"), array("https://www.youtube.com/", "https://player.vimeo.com/"), $j->html);\r
- }\r
-\r
- $j->embedurl = $embedurl;\r
-\r
- // If fetching information doesn't work, then improve via internal functions\r
- if (($j->type == "error") || ($no_rich_type && ($j->type == "rich"))) {\r
- $data = ParseUrl::getSiteinfoCached($embedurl, true, false);\r
- $j->type = $data["type"];\r
-\r
- if ($j->type == "photo") {\r
- $j->url = $data["url"];\r
- //$j->width = $data["images"][0]["width"];\r
- //$j->height = $data["images"][0]["height"];\r
- }\r
-\r
- if (isset($data["title"])) {\r
- $j->title = $data["title"];\r
- }\r
-\r
- if (isset($data["text"])) {\r
- $j->description = $data["text"];\r
- }\r
-\r
- if (is_array($data["images"])) {\r
- $j->thumbnail_url = $data["images"][0]["src"];\r
- $j->thumbnail_width = $data["images"][0]["width"];\r
- $j->thumbnail_height = $data["images"][0]["height"];\r
- }\r
- }\r
-\r
- call_hooks('oembed_fetch_url', $embedurl, $j);\r
-\r
- return $j;\r
- }\r
-\r
- public static function formatObject($j)\r
- {\r
- $embedurl = $j->embedurl;\r
- $jhtml = $j->html;\r
- $ret = '<div class="oembed ' . $j->type . '">';\r
- switch ($j->type) {\r
- case "video":\r
- if (isset($j->thumbnail_url)) {\r
- $tw = (isset($j->thumbnail_width) && intval($j->thumbnail_width)) ? $j->thumbnail_width : 200;\r
- $th = (isset($j->thumbnail_height) && intval($j->thumbnail_height)) ? $j->thumbnail_height : 180;\r
- // make sure we don't attempt divide by zero, fallback is a 1:1 ratio\r
- $tr = (($th) ? $tw / $th : 1);\r
-\r
- $th = 120;\r
- $tw = $th * $tr;\r
- $tpl = get_markup_template('oembed_video.tpl');\r
- $ret .= replace_macros($tpl, array(\r
- '$baseurl' => System::baseUrl(),\r
- '$embedurl' => $embedurl,\r
- '$escapedhtml' => base64_encode($jhtml),\r
- '$tw' => $tw,\r
- '$th' => $th,\r
- '$turl' => $j->thumbnail_url,\r
- ));\r
- } else {\r
- $ret = $jhtml;\r
- }\r
- break;\r
- case "photo":\r
- $ret .= '<img width="' . $j->width . '" src="' . proxy_url($j->url) . '">';\r
- break;\r
- case "link":\r
- break;\r
- case "rich":\r
- if (self::isAllowedURL($embedurl)) {\r
- $ret .= proxy_parse_html($jhtml);\r
- }\r
- break;\r
- }\r
-\r
- $ret .= '</div>';\r
- // add link to source if not present in "rich" type\r
- if ($j->type != 'rich' || !strpos($j->html, $embedurl)) {\r
- $ret .= '<h4>';\r
- if (isset($j->title)) {\r
- if (isset($j->provider_name)) {\r
- $ret .= $j->provider_name . ": ";\r
- }\r
-\r
- $embedlink = (isset($j->title)) ? $j->title : $embedurl;\r
- $ret .= '<a href="' . $embedurl . '" rel="oembed">' . $embedlink . '</a>';\r
- if (isset($j->author_name)) {\r
- $ret .= ' (' . $j->author_name . ')';\r
- }\r
- } elseif (isset($j->provider_name) || isset($j->author_name)) {\r
- $embedlink = "";\r
- if (isset($j->provider_name)) {\r
- $embedlink .= $j->provider_name;\r
- }\r
-\r
- if (isset($j->author_name)) {\r
- if ($embedlink != "") {\r
- $embedlink .= ": ";\r
- }\r
-\r
- $embedlink .= $j->author_name;\r
- }\r
- if (trim($embedlink) == "") {\r
- $embedlink = $embedurl;\r
- }\r
-\r
- $ret .= '<a href="' . $embedurl . '" rel="oembed">' . $embedlink . '</a>';\r
- }\r
- $ret .= "</h4>";\r
- } elseif (!strpos($j->html, $embedurl)) {\r
- // add <a> for html2bbcode conversion\r
- $ret .= '<a href="' . $embedurl . '" rel="oembed">' . $j->title . '</a>';\r
- }\r
-\r
- $ret = str_replace("\n", "", $ret);\r
- return mb_convert_encoding($ret, 'HTML-ENTITIES', mb_detect_encoding($ret));\r
- }\r
-\r
- public static function BBCode2HTML($text)\r
- {\r
- $stopoembed = Config::get("system", "no_oembed");\r
- if ($stopoembed == true) {\r
- return preg_replace("/\[embed\](.+?)\[\/embed\]/is", "<!-- oembed $1 --><i>" . t('Embedding disabled') . " : $1</i><!-- /oembed $1 -->", $text);\r
- }\r
- return preg_replace_callback("/\[embed\](.+?)\[\/embed\]/is", ['self', 'replaceCallback'], $text);\r
- }\r
-\r
- /**\r
- * Find <span class='oembed'>..<a href='url' rel='oembed'>..</a></span>\r
- * and replace it with [embed]url[/embed]\r
- */\r
- public static function HTML2BBCode($text)\r
- {\r
- // start parser only if 'oembed' is in text\r
- if (strpos($text, "oembed")) {\r
-\r
- // convert non ascii chars to html entities\r
- $html_text = mb_convert_encoding($text, 'HTML-ENTITIES', mb_detect_encoding($text));\r
-\r
- // If it doesn't parse at all, just return the text.\r
- $dom = @DOMDocument::loadHTML($html_text);\r
- if (!$dom) {\r
- return $text;\r
- }\r
- $xpath = new DOMXPath($dom);\r
-\r
- $xattr = self::buildXPath("class", "oembed");\r
- $entries = $xpath->query("//div[$xattr]");\r
-\r
- $xattr = "@rel='oembed'"; //oe_build_xpath("rel","oembed");\r
- foreach ($entries as $e) {\r
- $href = $xpath->evaluate("a[$xattr]/@href", $e)->item(0)->nodeValue;\r
- if (!is_null($href)) {\r
- $e->parentNode->replaceChild(new DOMText("[embed]" . $href . "[/embed]"), $e);\r
- }\r
- }\r
- return self::getInnerHTML($dom->getElementsByTagName("body")->item(0));\r
- } else {\r
- return $text;\r
- }\r
- }\r
-\r
- /**\r
- * @brief Generates the iframe HTML for an oembed attachment.\r
- *\r
- * Width and height are given by the remote, and are regularly too small for\r
- * the generated iframe.\r
- *\r
- * The width is entirely discarded for the actual width of the post, while fixed\r
- * height is used as a starting point before the inevitable resizing.\r
- *\r
- * Since the iframe is automatically resized on load, there are no need for ugly\r
- * and impractical scrollbars.\r
- *\r
- * @todo This function is currently unused until someone™ adds support for a separate OEmbed domain\r
- *\r
- * @param string $src Original remote URL to embed\r
- * @param string $width\r
- * @param string $height\r
- * @return string formatted HTML\r
- *\r
- * @see oembed_format_object()\r
- */\r
- private static function iframe($src, $width, $height)\r
- {\r
- $a = get_app();\r
-\r
- if (!$height || strstr($height, '%')) {\r
- $height = '200';\r
- }\r
- $width = '100%';\r
-\r
- $src = System::baseUrl() . '/oembed/' . base64url_encode($src);\r
- return '<iframe onload="resizeIframe(this);" class="embed_rich" height="' . $height . '" width="' . $width . '" src="' . $src . '" allowfullscreen scrolling="no" frameborder="no">' . t('Embedded content') . '</iframe>';\r
- }\r
-\r
- /**\r
- * Generates an XPath query to select elements whose provided attribute contains\r
- * the provided value in a space-separated list.\r
- *\r
- * @brief Generates attribute search XPath string\r
- *\r
- * @param string $attr Name of the attribute to seach\r
- * @param string $value Value to search in a space-separated list\r
- * @return string\r
- */\r
- private static function buildXPath($attr, $value)\r
- {\r
- // https://www.westhoffswelt.de/blog/2009/6/9/select-html-elements-with-more-than-one-css-class-using-xpath\r
- return "contains(normalize-space(@$attr), ' $value ') or substring(normalize-space(@$attr), 1, string-length('$value') + 1) = '$value ' or substring(normalize-space(@$attr), string-length(@$attr) - string-length('$value')) = ' $value' or @$attr = '$value'";\r
- }\r
-\r
- /**\r
- * Returns the inner XML string of a provided DOMNode\r
- *\r
- * @brief Returns the inner XML string of a provided DOMNode\r
- *\r
- * @param DOMNode $node\r
- * @return string\r
- */\r
- private static function getInnerHTML(DOMNode $node)\r
- {\r
- $innerHTML = '';\r
- $children = $node->childNodes;\r
- foreach ($children as $child) {\r
- $innerHTML .= $child->ownerDocument->saveXML($child);\r
- }\r
- return $innerHTML;\r
- }\r
-\r
- /**\r
- * Determines if rich content OEmbed is allowed for the provided URL\r
- *\r
- * @brief Determines if rich content OEmbed is allowed for the provided URL\r
- * @param string $url\r
- * @return boolean\r
- */\r
- private static function isAllowedURL($url)\r
- {\r
- if (!Config::get('system', 'no_oembed_rich_content')) {\r
- return true;\r
- }\r
-\r
- $domain = parse_url($url, PHP_URL_HOST);\r
-\r
- $str_allowed = Config::get('system', 'allowed_oembed', '');\r
- $allowed = explode(',', $str_allowed);\r
-\r
- return allowed_domain($domain, $allowed, true);\r
- }\r
-}\r
+<?php
+
+/**
+ * @file src/Content/OEmbed.php
+ */
+namespace Friendica\Content;
+
+use Friendica\Core\Addon;
+use Friendica\Core\Cache;
+use Friendica\Core\Config;
+use Friendica\Core\L10n;
+use Friendica\Core\System;
+use Friendica\Database\DBM;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Network;
+use Friendica\Util\ParseUrl;
+use dba;
+use DOMDocument;
+use DOMNode;
+use DOMText;
+use DOMXPath;
+use Exception;
+use stdClass;
+
+require_once 'include/dba.php';
+require_once 'mod/proxy.php';
+
+/**
+ * Handles all OEmbed content fetching and replacement
+ *
+ * OEmbed is a standard used to allow an embedded representation of a URL on
+ * third party sites
+ *
+ * @see https://oembed.com
+ *
+ * @author Hypolite Petovan <mrpetovan@gmail.com>
+ */
+class OEmbed
+{
+ public static function replaceCallback($matches)
+ {
+ $embedurl = $matches[1];
+ $j = self::fetchURL($embedurl, !self::isAllowedURL($embedurl));
+ $s = self::formatObject($j);
+
+ return $s;
+ }
+
+ /**
+ * @brief Get data from an URL to embed its content.
+ *
+ * @param string $embedurl The URL from which the data should be fetched.
+ * @param bool $no_rich_type If set to true rich type content won't be fetched.
+ *
+ * @return bool|object Returns object with embed content or false if no embeddable
+ * content exists
+ */
+ public static function fetchURL($embedurl, $no_rich_type = false)
+ {
+ $embedurl = trim($embedurl, "'");
+ $embedurl = trim($embedurl, '"');
+
+ $a = get_app();
+
+ $condition = ['url' => normalise_link($embedurl), 'maxwidth' => $a->videowidth];
+ $oembed = dba::selectFirst('oembed', ['content'], $condition);
+ if (DBM::is_result($oembed)) {
+ $txt = $oembed["content"];
+ } else {
+ $txt = Cache::get($a->videowidth . $embedurl);
+ }
+ // These media files should now be caught in bbcode.php
+ // left here as a fallback in case this is called from another source
+
+ $noexts = ["mp3", "mp4", "ogg", "ogv", "oga", "ogm", "webm"];
+ $ext = pathinfo(strtolower($embedurl), PATHINFO_EXTENSION);
+
+
+ if (is_null($txt)) {
+ $txt = "";
+
+ if (!in_array($ext, $noexts)) {
+ // try oembed autodiscovery
+ $redirects = 0;
+ $html_text = Network::fetchUrl($embedurl, false, $redirects, 15, "text/*");
+ if ($html_text) {
+ $dom = @DOMDocument::loadHTML($html_text);
+ if ($dom) {
+ $xpath = new DOMXPath($dom);
+ $entries = $xpath->query("//link[@type='application/json+oembed']");
+ foreach ($entries as $e) {
+ $href = $e->getAttributeNode("href")->nodeValue;
+ $txt = Network::fetchUrl($href . '&maxwidth=' . $a->videowidth);
+ break;
+ }
+ $entries = $xpath->query("//link[@type='text/json+oembed']");
+ foreach ($entries as $e) {
+ $href = $e->getAttributeNode("href")->nodeValue;
+ $txt = Network::fetchUrl($href . '&maxwidth=' . $a->videowidth);
+ break;
+ }
+ }
+ }
+ }
+
+ $txt = trim($txt);
+
+ if (!$txt || $txt[0] != "{") {
+ $txt = '{"type":"error"}';
+ } else { //save in cache
+ $j = json_decode($txt);
+ if (!empty($j->type) && $j->type != "error") {
+ dba::insert('oembed', [
+ 'url' => normalise_link($embedurl),
+ 'maxwidth' => $a->videowidth,
+ 'content' => $txt,
+ 'created' => DateTimeFormat::utcNow()
+ ], true);
+ }
+
+ Cache::set($a->videowidth . $embedurl, $txt, CACHE_DAY);
+ }
+ }
+
+ $j = json_decode($txt);
+
+ if (!is_object($j)) {
+ return false;
+ }
+
+ // Always embed the SSL version
+ if (isset($j->html)) {
+ $j->html = str_replace(["http://www.youtube.com/", "http://player.vimeo.com/"], ["https://www.youtube.com/", "https://player.vimeo.com/"], $j->html);
+ }
+
+ $j->embedurl = $embedurl;
+
+ // If fetching information doesn't work, then improve via internal functions
+ if ($no_rich_type && ($j->type == "rich")) {
+ $data = ParseUrl::getSiteinfoCached($embedurl, true, false);
+ $j->type = $data["type"];
+
+ if ($j->type == "photo") {
+ $j->url = $data["url"];
+ }
+
+ if (isset($data["title"])) {
+ $j->title = $data["title"];
+ }
+
+ if (isset($data["text"])) {
+ $j->description = $data["text"];
+ }
+
+ if (is_array($data["images"])) {
+ $j->thumbnail_url = $data["images"][0]["src"];
+ $j->thumbnail_width = $data["images"][0]["width"];
+ $j->thumbnail_height = $data["images"][0]["height"];
+ }
+ }
+
+ Addon::callHooks('oembed_fetch_url', $embedurl, $j);
+
+ return $j;
+ }
+
+ private static function formatObject(stdClass $j)
+ {
+ $embedurl = $j->embedurl;
+ $jhtml = $j->html;
+ $ret = '<div class="oembed ' . $j->type . '">';
+
+ switch ($j->type) {
+ case "video":
+ if (isset($j->thumbnail_url)) {
+ $tw = (isset($j->thumbnail_width) && intval($j->thumbnail_width)) ? $j->thumbnail_width : 200;
+ $th = (isset($j->thumbnail_height) && intval($j->thumbnail_height)) ? $j->thumbnail_height : 180;
+ // make sure we don't attempt divide by zero, fallback is a 1:1 ratio
+ $tr = (($th) ? $tw / $th : 1);
+
+ $th = 120;
+ $tw = $th * $tr;
+ $tpl = get_markup_template('oembed_video.tpl');
+ $ret .= replace_macros($tpl, [
+ '$baseurl' => System::baseUrl(),
+ '$embedurl' => $embedurl,
+ '$escapedhtml' => base64_encode($jhtml),
+ '$tw' => $tw,
+ '$th' => $th,
+ '$turl' => $j->thumbnail_url,
+ ]);
+ } else {
+ $ret = $jhtml;
+ }
+ break;
+ case "photo":
+ $ret .= '<img width="' . $j->width . '" src="' . proxy_url($j->url) . '">';
+ break;
+ case "link":
+ break;
+ case "rich":
+ $ret .= proxy_parse_html($jhtml);
+ break;
+ }
+
+ // add link to source if not present in "rich" type
+ if ($j->type != 'rich' || !strpos($j->html, $embedurl)) {
+ $ret .= '<h4>';
+ if (!empty($j->title)) {
+ if (!empty($j->provider_name)) {
+ $ret .= $j->provider_name . ": ";
+ }
+
+ $ret .= '<a href="' . $embedurl . '" rel="oembed">' . $j->title . '</a>';
+ if (!empty($j->author_name)) {
+ $ret .= ' (' . $j->author_name . ')';
+ }
+ } elseif (!empty($j->provider_name) || !empty($j->author_name)) {
+ $embedlink = "";
+ if (!empty($j->provider_name)) {
+ $embedlink .= $j->provider_name;
+ }
+
+ if (!empty($j->author_name)) {
+ if ($embedlink != "") {
+ $embedlink .= ": ";
+ }
+
+ $embedlink .= $j->author_name;
+ }
+ if (trim($embedlink) == "") {
+ $embedlink = $embedurl;
+ }
+
+ $ret .= '<a href="' . $embedurl . '" rel="oembed">' . $embedlink . '</a>';
+ } else {
+ $ret .= '<a href="' . $embedurl . '" rel="oembed">' . $embedurl . '</a>';
+ }
+ $ret .= "</h4>";
+ } elseif (!strpos($j->html, $embedurl)) {
+ // add <a> for html2bbcode conversion
+ $ret .= '<a href="' . $embedurl . '" rel="oembed">' . $j->title . '</a>';
+ }
+
+ $ret .= '</div>';
+
+ $ret = str_replace("\n", "", $ret);
+ return mb_convert_encoding($ret, 'HTML-ENTITIES', mb_detect_encoding($ret));
+ }
+
+ public static function BBCode2HTML($text)
+ {
+ $stopoembed = Config::get("system", "no_oembed");
+ if ($stopoembed == true) {
+ return preg_replace("/\[embed\](.+?)\[\/embed\]/is", "<!-- oembed $1 --><i>" . L10n::t('Embedding disabled') . " : $1</i><!-- /oembed $1 -->", $text);
+ }
+ return preg_replace_callback("/\[embed\](.+?)\[\/embed\]/is", ['self', 'replaceCallback'], $text);
+ }
+
+ /**
+ * Find <span class='oembed'>..<a href='url' rel='oembed'>..</a></span>
+ * and replace it with [embed]url[/embed]
+ */
+ public static function HTML2BBCode($text)
+ {
+ // start parser only if 'oembed' is in text
+ if (strpos($text, "oembed")) {
+
+ // convert non ascii chars to html entities
+ $html_text = mb_convert_encoding($text, 'HTML-ENTITIES', mb_detect_encoding($text));
+
+ // If it doesn't parse at all, just return the text.
+ $dom = @DOMDocument::loadHTML($html_text);
+ if (!$dom) {
+ return $text;
+ }
+ $xpath = new DOMXPath($dom);
+
+ $xattr = self::buildXPath("class", "oembed");
+ $entries = $xpath->query("//div[$xattr]");
+
+ $xattr = "@rel='oembed'"; //oe_build_xpath("rel","oembed");
+ foreach ($entries as $e) {
+ $href = $xpath->evaluate("a[$xattr]/@href", $e)->item(0)->nodeValue;
+ if (!is_null($href)) {
+ $e->parentNode->replaceChild(new DOMText("[embed]" . $href . "[/embed]"), $e);
+ }
+ }
+ return self::getInnerHTML($dom->getElementsByTagName("body")->item(0));
+ } else {
+ return $text;
+ }
+ }
+
+ /**
+ * Determines if rich content OEmbed is allowed for the provided URL
+ *
+ * @brief Determines if rich content OEmbed is allowed for the provided URL
+ * @param string $url
+ * @return boolean
+ */
+ public static function isAllowedURL($url)
+ {
+ if (!Config::get('system', 'no_oembed_rich_content')) {
+ return true;
+ }
+
+ $domain = parse_url($url, PHP_URL_HOST);
+ if (!x($domain)) {
+ return false;
+ }
+
+ $str_allowed = Config::get('system', 'allowed_oembed', '');
+ if (!x($str_allowed)) {
+ return false;
+ }
+
+ $allowed = explode(',', $str_allowed);
+
+ return Network::isDomainAllowed($domain, $allowed);
+ }
+
+ public static function getHTML($url, $title = null)
+ {
+ // Always embed the SSL version
+ $url = str_replace(["http://www.youtube.com/", "http://player.vimeo.com/"],
+ ["https://www.youtube.com/", "https://player.vimeo.com/"], $url);
+
+ $o = self::fetchURL($url, !self::isAllowedURL($url));
+
+ if (!is_object($o) || property_exists($o, 'type') && $o->type == 'error') {
+ throw new Exception('OEmbed failed for URL: ' . $url);
+ }
+
+ if (x($title)) {
+ $o->title = $title;
+ }
+
+ $html = self::formatObject($o);
+
+ return $html;
+ }
+
+ /**
+ * @brief Generates the iframe HTML for an oembed attachment.
+ *
+ * Width and height are given by the remote, and are regularly too small for
+ * the generated iframe.
+ *
+ * The width is entirely discarded for the actual width of the post, while fixed
+ * height is used as a starting point before the inevitable resizing.
+ *
+ * Since the iframe is automatically resized on load, there are no need for ugly
+ * and impractical scrollbars.
+ *
+ * @todo This function is currently unused until someone™ adds support for a separate OEmbed domain
+ *
+ * @param string $src Original remote URL to embed
+ * @param string $width
+ * @param string $height
+ * @return string formatted HTML
+ *
+ * @see oembed_format_object()
+ */
+ private static function iframe($src, $width, $height)
+ {
+ $a = get_app();
+
+ if (!$height || strstr($height, '%')) {
+ $height = '200';
+ }
+ $width = '100%';
+
+ $src = System::baseUrl() . '/oembed/' . base64url_encode($src);
+ return '<iframe onload="resizeIframe(this);" class="embed_rich" height="' . $height . '" width="' . $width . '" src="' . $src . '" allowfullscreen scrolling="no" frameborder="no">' . L10n::t('Embedded content') . '</iframe>';
+ }
+
+ /**
+ * Generates an XPath query to select elements whose provided attribute contains
+ * the provided value in a space-separated list.
+ *
+ * @brief Generates attribute search XPath string
+ *
+ * @param string $attr Name of the attribute to seach
+ * @param string $value Value to search in a space-separated list
+ * @return string
+ */
+ private static function buildXPath($attr, $value)
+ {
+ // https://www.westhoffswelt.de/blog/2009/6/9/select-html-elements-with-more-than-one-css-class-using-xpath
+ return "contains(normalize-space(@$attr), ' $value ') or substring(normalize-space(@$attr), 1, string-length('$value') + 1) = '$value ' or substring(normalize-space(@$attr), string-length(@$attr) - string-length('$value')) = ' $value' or @$attr = '$value'";
+ }
+
+ /**
+ * Returns the inner XML string of a provided DOMNode
+ *
+ * @brief Returns the inner XML string of a provided DOMNode
+ *
+ * @param DOMNode $node
+ * @return string
+ */
+ private static function getInnerHTML(DOMNode $node)
+ {
+ $innerHTML = '';
+ $children = $node->childNodes;
+ foreach ($children as $child) {
+ $innerHTML .= $child->ownerDocument->saveXML($child);
+ }
+ return $innerHTML;
+ }
+
+}
projects / friendica.git / blobdiff